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| explain_fflush_or_die(3) | FreeBSD Library Functions Manual | explain_fflush_or_die(3) |
NAME
explain_fflush_or_die - flush a stream and report errorsSYNOPSIS
#include <libexplain/fflush.h>void explain_fflush_or_die(FILE *fp);
int explain_fflush_on_error(FILE *fp);
DESCRIPTION
The explain_fflush_or_die function is used to call the fflush(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_fflush(3) function, and then the process terminates by calling exit(EXIT_FAILURE).The explain_fflush_on_error function is used to call the fflush(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_fflush(3) function, but still returns to the caller.
- fp
- The fp, exactly as to be passed to the fflush(3) system call.
RETURN VALUE
The explain_fflush_or_die function only returns on success, see fflush(3) for more information. On failure, prints an explanation and exits, it does not return.The explain_fflush_on_error function always returns the value return by the wrapped fflush(3) system call.
EXAMPLE
The explain_fflush_or_die function is intended to be used in a fashion similar to the following example:explain_fflush_or_die(fp);
SEE ALSO
- fflush(3)
- flush a stream
- explain_fflush(3)
- explain fflush(3) errors
- exit(2)
- terminate the calling process
COPYRIGHT
libexplain version 1.3Copyright (C) 2009 Peter Miller
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